Focus Quotes - Page 12
Bruce Lee (2015). “Bruce Lee Striking Thoughts: Bruce Lee's Wisdom for Daily Living”, p.39, Tuttle Publishing
"The 4-Hour Workweek: Escape 9-5, Live Anywhere, and Join the New Rich". Book by Timothy Ferriss, 2007.
Stuart Wilde (1998). “The Trick to Money is Having Some”, p.148, Hay House, Inc